Duramax blows white smoke when cold

Duramax blows white smoke when cold

injectors were replaced 50k ago oil level and coolant level is good i think it might be bad injectors. My 2015 LML is still stock as it has 34,XXX miles, i am about to go w a switch and 5 tunes and exhaust and what not but today i noticed i cloud of white smoke after getting on it on to the FWY. Jul 19, 2023 · White smoke indicates incomplete combustion, meaning the fuel is not burning properly. Took it to a shop and they determined that the injectors are fine (replaced at 170K). Please discard Corporate Bulletin Number 04-06-04-007F (Section 06 -- Engine/Propulsion System). Still gonna get mine in and checked out. Using a mix of Delo Synthetic 5W40 (1/3 Nov 21, 2014 · Earnhardtfan. Nov 1, 2011 · Blowing white smoke then dead. so i stopped adding it. You might not have noticed it as much, but since you removed the cat, it's expelling the particulate Aug 9, 2018 · Hi, I have a 2003 Chevy Silverado 2500hd it has a 2005 GMC Sierra 2500hd motor in it the ECM is from the 2003 truck. Especially if its when you goose the throttle. 21 posts · Joined 2011. EFI Live, Edge Insight CTS, Flo~Pro 4" DP back exhaust w/ muffler & stock trumpet tip, Alum. Jul 7, 2011 · castle duramax Discussion starter. Jan 15, 2018 · TX of course. - checked #2 and #7 injector connectors (years ago I a had replaced connectors with GM fix Aug 28, 2014 · Morning guy's hopefully you can help, here are the codes i am getting: PO1093 fuel pressure low while power rich. This black soot is the main thing that the DPF filter is May 6, 2010 · A Detroit 2 stroke will blow white when it's cold, due to low cyl temps, and therefore an incomplete burn of the fuel. It is deleted with 116k miles. 17168 posts · Joined 2011. Sep 3, 2015 · my deleted LMM would blue smoke for 5 seconds. SDP Twinz, 40% overs, EFILive by me, Stage V trans, BT lock up box. Summit White. And grey smoke is not bad, it just means you are burning most of the fuel, white or blue smoke is what you get concerned about Oct 27, 2022 · Truck has about 64000 on it. Oct 18, 2011 · My truck did it too with the first built motor. Has good power, boost gauge goes to 20psi and egt gauge (goes to pass side manifold) stays under 800, idle around 250. If it's hard then it's probably head gaskets. no power loss and drives fine. 5 w/FOX-Fuel Maverick 20x10s. F. 5 posts · Joined 2013. 2008 2500HD 6. There is no blue smoke on a warm engine start even when sitting for as many as 4 hours. Sep 8, 2016 · C. Air shows starts when I get on the gas Dec 15, 2004 · With the foot off the accelerator and the engine holding down the speed to 40-50 KM/H, or 30MPH, repeatedly when gently or abruptly pressing the accelerator on straight sections, a considerable amount of blue smoke blows from the exhaust, not just a puff, but for a considerable distance,before it cleared up. Oct 27, 2013 · When the engine is cold and the compression does not create a high enough temp in one of the cylinders the "white smoke" comes out the exhaust. Injectors. the dealer or someone with a tech scan tool should be able to do a cut-out test of your injectors, you have a bad injector dribbling fuel into your exhaust, normally white smoke is coolant but a bad injector will do the same. Took it to the dealerThe diesel mech. If youve gelled up pour in the Diesel 911, then add Power Service (white bottle) to prevent fuel gelling. Dec 5, 2009 · It would look like one of those old mosquito smoker trucks from back in the day. No white smoke or black smoke, and clears up just off idle. Yesterday, I excelerated quickly to pass a car and I put out a cloud of bluish white smoke, alot of smoke/vapor. #1 · Aug 13, 2012. Oct 13, 2011 · If i revved, more white would come out. Ran rough almost like it was missing and no power. Truck now has 225,000. If the two were related, you would have bigger issues and different smells from the truck, i. i noticed fuel filter is very old, im going to change run a fuel systems psi test to eliminate leaks, bad fpr etc. Decided to take it for a test drive and it was immediately blowing white smoke. This is bad could cause a hydro lock it's referred to as. - changed fuel filter. It smokes worse longer it sits . I replaced them and have had no problems till now. Nov 1, 2010 · 150 posts · Joined 2010. It doesnt help prevent fuel gelling. It's also got a pretty loud knock around 1700 rpm, but that could just be regular Duramax sounds, I wouldn't know. #1 · Nov 14, 2013. 25 each much better then the $350. Which is why when it warms up there is no more smoke. PPE excelerator Economy tuner (tune 3) EGR blocker plate and an annoying ses light. cat and muffler delete and 5" chrome tip. 1521 posts · Joined 2013. but I will be driving it and it runs perfectly fine but suddenly losses all power, doesn't throw any codes at all, and when I push the pedal down, white smoke comes out the exhaust. the truck runs great, as far as I know. duramaxdarrell Discussion starter. #10 · Apr 25, 2008. #5 · Jan 30, 2017. Pulled into the rest area and noticed a squeaking tick from the engine at idle. com Subscribe to my new YouTube cha Jun 6, 2012 · I did some research and discovered the cooling problems with the lly so i ordered the lbz inlet and banks cold air intake. 50-R18. 16 posts · Joined 2006. The past month or so my truck idles rough and blows white smoke idling in gear, but it doesn't do it when the truck is cold or all the way up to operating temp or in park or neutral, only when it is slightly warm. mike j Discussion starter. Banks Monster Exhaust, CAI. All injectors just tested. When cold the computer will fuel to maintain RPM's and may pour the fuel to it to keep it running. Jan 26, 2014 · Like. NIC R. 5:1 and upped the injectors to 80%, and it idled perfectly clean. My did the same thing. I've cleaned the maf sensor and been giving it a pretty heavy dose of 2 stroke oil the Sep 21, 2010 · 4754 posts · Joined 2008. #1 · Sep 12, 2010. Feb 12, 2020 · M. Looked for oil residue in the intake hoses Mar 10, 2010 · Smoke coming out of blow by tube. Jan 6, 2013 · HD Dmax Machine. 2015 Denali 3500 CCSB - motorops delete, 4" AFE exhaust, MBRP downpipe, 2" lowering shackles, 20x9 Mavericks. Had s guy take a look and say it needs a rebuild. White smoke could be a sign of the PCV valve leaking oil out of the crankcase and into the intake/turbo. Sean. Heres the deal. just wanted to post some findings, too many people ask questions and never post solutions as they find them. Nov 2, 2012 · 2011 2500HD LT, white on black, Longbed crew cab Z71, Fatbobsgarage. threw low FR psi code, fuel in oil. Tip is clean and i have not noticed it untill now (have had truck for about 3,XXX miles. e. May 22, 2012 · 544 posts · Joined 2012. 4'' Exhaust, Airdog, Traction Bars, Built Front End, . The balance rate show the volume of fuel at idle being put into or taking away from each cylinder to create a idle. '02 Silverado 2500HD LT. Tonight, new radiator is in, 5 gallons of coolant, drained the oil, no coolant there, 10 quarts in, time to fire it up. Dec 9, 2006 · D. 5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004. White smoke can be a indication of unburnt diesel fuel. When it worms up up to 1 minute of cold start; I get white smoke. DPF traps soot (black smoke). #2 · Nov 3, 2010. p1125 APP sensor problem. I have read previous threads on the rail pressure and injector balance rates. After watching a few videos of deleted lml and lmm trucks I noticed a white smoke when they rev the truck. Jump to Latest Follow MA High Performance Duramax Motor Mounts :rockin AFE stage 2 cold air intake, Lbz mouthpeace, PPE Exhaust Jan 27, 2013 · I finally got the truck started after batteries dying and priming the system like crazy. Normally an indication of low compression in at least one cylinder. All gauges are ok. Replaced them all. Black smoke is from fuel left unburnt during the combustion event. Oct 26, 2017 · If it's leaking that bad, you should be able to crawl under the truck and see where the oil is coming from and remedy it. SOLD 03 2500 built trans/efi/leveled. So, I took a data sample of 40 seconds and averaged it and then applied the same logic to the injector balance rates (only 20 seconds). #5 · Feb 15, 2010. Hey everyone, so lately my truck has been blowing a big puff of white smoke from the exhaust. #1 · May 27, 2018. Apr 8, 2009 · Lb7 injectors. B. If I let the truck idle for a fairly long amount of time - 30 minutes or so - and then take off, especially with the trailer in tow, I get billowing white smoke for about 5 minutes. sometimes it will go away right away and be Feb 29, 2020 · No CEL, no codes, and no smoke out of tailpipe. when I had a stuck #8 injector it blew white smoke and filled a 4 lane road then died to never be started intill it was replaced, when it cranked it was black smoke not a whole lot, the rails could never build enough pressure to sustain combustion. 6 Duramax. if i idle more than 2 hours at a rest stop or truck stop and when i leave and jump on the highway and step on it to catch speed my truck will shoot out white smoke for about 30 to 60 seconds. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. #3. I'm blowing large quantity of white smoke at idle. I didn’t do PCV reroute but did install a catch can, it had maybe a teaspoon of oil in it. And then when she kicks into high idle she really starts blowin hahaha. Sent from my SAMSUNG-SM-G900A using Tapatalk. Im Going crazy here i just bought the truck about 6 months ago unfortunately had to do head gaskets already when the truck went in for the head gaskets they also did the head studs all 8 injectors fuel filter housing all new fuel lines got the truck back now when you get around 2400-2600 rpms truck will start Aug 22, 2020 · Aug 22, 2020. It has 78k miles and I'm curious if anyone knows what might be going on. None fixing the problem. 5 drop kit, Crome bowtie's 2006 FSC3200 weekend warrior toy hauler. Great, problem solved. Aug 15, 2023 · While performing the test, about 45 minutes of idling to get to temps, the truck did not blow white smoke. 02 LB7 with 230+ miles started to blow (kinda white) smoke at idle then when gassed bunch of blue (oil) smoke until at speed then clear and is still running great but the mileage is down about 1 mpg. Aug 1, 2016 · Stopped to fill fuel while towing a fairly large load. 2020 L5P 2500 CC/SB GMC AT4 in Blue. com Mar 12, 2008 · 6 posts · Joined 2008. 6 Duramax, Allison trans, used almost exclusively for pulling our toy hauler (37 ft, 13k dry). Hello, I own a 2003 Silverado 2500HD 6. Mine puffs white on a cold start, then when elevated idle kicks in itll blow white until it warms up. Have a Titan 43 gallon tank. 1972 Chevelle - 370ci LS/built th400, billet S484 (8. #4 · May 2, 2014. i am a hotshot driver with a 2006 sierra 3500 duramax. 7784 posts · Joined 2009. It would white smoke when started cold, but it didn't do it until temps were down closer to the 50s. Hey guys I have searched and searched and have not found any answers. You've got the LB7 engine that is known for injector probs. Apr 25, 2012 · jmdura03 Discussion starter. It blows consistently until I let off the gas. Ramp it up 1 kpa at a time until it goes away. So I admit, running a lot of injector cleaner in fuel, took a long trip, (1800 miles), added Power Service Diesel Clean every time I filled up. #6 · May 4, 2012. (That is if they blow smoke) Most of the videos I watched where all H&S tuned trucks. Jun 3, 2013 · Injector Cleaner and White Smoke. 06 2500 4x4 Jul 21, 2008 · 2002 Silverado 3500 4-door dually 2x4 Duramax :gearjamin. So a injector could be stuck open dumping fuel into a cylinder. #1. Power Service 911 is only for gelled fuel. Aug 4, 2012 · :help I was passing two cars earlier and right when I got back in the rt lane my truck lost power. #1 · Dec 9, 2006 (Edited) having a problem with light blue smoke at idle and heavy blue smoke on acceleration with it clearing away at cruse speed some say it is valve guides but upon going to the dealer the claim there are no valve guide seals on the duramax 6. PPE DIESEL, Heavy Duty Tie Rods, Lift Pumps, Diesel Parts Merch! key tags, decals and shirts!👍 https://truckmasterdiesel. It only seems to happen when the engine is cold or has sat for a few hours. The only problem I have had in the past was number 2 and number7 injectors going bad at 110,000 miles. May 1, 2016 · May 1, 2016. does anyone know what this is. A little blue on startup, then on first acceleration a little blue smoke (just blue) but nothing too alarming. In the last month the truck has been saying coolant level low as well, I check the bottle and it is 3/4 full. i replaced the glow plugs, still smoked, found a broken wire on the cold advance temp sensor, fixed that, cut Dec 27, 2018 · The ninth injector can fail and cause white smoke on regen. Also smokes white when taking off from a dead stop. Like. She never game a any issues before. Stock LB7 / Allison with 1,105,000 miles :gearjamin. com it is actually a gm dealer in my area and they only cost $201. I've got a 2004 HD2500, 6. 6 and that that Feb 12, 2018 · 1,010. The white is likely un-burnt fuel, and when it warmed up it started to burn all the fuel. From everything I've read, there are a ton of things that could be causing this. All vehicles Ive ever owned, gas or diesel will blow steam for a while on cold mornings. Justin 2001 LB7 Silverado 2500HD LT CCSB 4x4. Mar 1, 2020 · Sounds like your cold smoke is steam but maybe you've ruled that out. Feb 20, 2011 · If the injector is stuck, the truck would pour white smoke. White smoke usual means injector problem. I have a 03 chevy lb7 and first i noticed oil in my paper filter and in the air breather tube. Oct 4, 2023 · 6. Apr 7, 2016 · 04. Once it reaches 190-210, the heater will blow hot air as long as you are driving. I have replaced the fuel filter housing, hoses, and WIF sensor. #2. My Duramax emits three types of white smoke from the exhaust: White smoke that disappears when the engine warms up in cold weather, A thick cloud of white smoke, Continuous light white Dec 8, 2020 · It would start up fine, no smoke at all. I also had a slight idle surge and rough idle. Original injectors went out at 65,000 miles. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. Sat at the stoplight, the whole time white smoke was coming out the tailpipe. Aug 13, 2012 · 17 posts · Joined 2012. 2003-2004 GMC Topkick C4500/C5500 Series. An example is the billowing clouds of dense black smoke exhausted from an unlimited diesel engine in competition. #1 · Sep 8, 2016. Cylinder temp is not high enough to burn any of the fuel during cold start. 6L Duramax with 286k miles. said that in the blow by there was a "T" installed running into the air filter box and that that was where the oil was coming from. #1 · Sep 19, 2008. #2 · Sep 25, 2011. Apr 18, 2014 · 148 posts · Joined 2011. #3 · Jan 6, 2013. Plus there should be much if any pressure durring shut down. Drove a little further, gave it some fuel and it dumped a ton of white smoke. The owner before me didn't take the best of care of the vehicle and have been fixing things as I go. light gray smokei usually run diesel kleen in the white bottle and i figured i must have been adding too much. any how, i was having terrible white smoke on cold starts, at least 5 min of thick white smoke. May 28, 2015 · Seems too soon for a bad injector, maybe check the EGR for a leak. No smoke other times, and does not smoke when cold. Condition. Salt Lake City, UT. BDS 4. Truck runs fine, but after long hard highway run, exhaust shows white smoke at idle. 5 Chevy 3500HD LTZ Z71 CCSB SRW. New fuel filter. It takes a while for the temperature gauge to come up. You should do this-- fill the coolant reservoir - drive the truck with a couple hard runs- then park it over night- check the top radiator hose in the morning --before you start it- if it is firm like a tennis ball-- you may have a bad head gasket Nov 10, 2013 · 280 posts · Joined 2013. Anti freeze is fine. Now; When engine is cold, she starts right up, no smoke, runs great. the guy said he lost the paperwork but i believed him (at Nov 1, 2017 · Have a 2014 lml that white smoke on start up and after warmed up when give a little throttle. Feb 14, 2010 · 20 posts · Joined 2009. - 2001 Silverado 2500HD Crew Cab / Long Bed -2WD. 5 white smoke on acceleration. Blue Smoke: Blue engine smoke is the rarest type of smoke emanating from a diesel engine. bleeder screw, WIF sensor delete plug Mar 28, 2016 · Some white coke when started and it's cold is normal. Drive it around and let it sit for 8+ hrs and then check the upper radiator hose. 2010 Tahoe LT, white on black, ground force 1. Also did all the internal fuel lines, thermostats, filters, egr solenoid, probably a May 3, 2012 · DirtyMaxx03. 6. Engine starts quickly and runs smoothly at all RPM's. PPEI Tuned, 5" exhaust, Airdog 4G, PPEI intake, EDGE CTS. Week or so later the injector pump, week or so after that the lift pump. Jun 6, 2024 · I have a 2003 Chevy Silverado 3500 diesel dully crew cab with 161,000 miles. Cyborg Discussion starter. I let it idle 20 or so mins, put her in retreat, no issues, put it in drive, and it Nov 24, 2013 · In cold weather conditions 25 degrees, with truck up to operating temp after a 30 mile drive. Smoke only increases as the engine get hotter. I have 2005 6. coolant. blue on start up is oil past the valve seals , . Sep 29, 2010 · Sep 28, 2010. White smoke at idle is a sign of bad injectors. 5 lly that seems to be having a surging issue and blowing white smoke. 163 posts · Joined 2013. HD Dmax Machine. I purchased a 2006 3500 dump last year but didn't get it on the road til this year since I needed to refinish it. We ended up cleaning the injectors and replacing fpr which seemed to solve the problems. Dec 14, 2009 · White Smoke when hot and loss of coolant. P2122 APP sensor 1 signal low. Custom 56 gallon fuel tank. Might need to dig deeper into it. i was getting on the freeway today after the truck had been running for an hour and a half or better. 5 / 2. 00 the dealer normally charges. Mar 24, 2009 · 2820 posts · Joined 2008. Jan 14, 2018. You could be at 10-20% throttle and be smoking out the cars behind you. I associate blue smoke with oil burning. bleeder screw, WIF sensor delete plug, Fumoto oil drain Sep 22, 2016 · This smoke is sometimes white-light gray and sometimes black. Also heavy diesel fuel smell. 5-2005 (LLY) 6. Nov 11, 2014. ^X2. Mods: Custom aluminum wheels. Understanding is that if the white smoke smells of diesel there may be a small injector o-ring leak or one working on failing. Sep 19, 2008 · emam2132 Discussion starter. 2015. My first guess is a dribbling injector,the white smoke sounds like unburned fuel and if an injector is leaking or not atomizing the fuel properly you are bound to get some smoke. My truck will intermittently blow white smoke from the exhaust. I stepped on the throttle to deter a tailgater from tail gating, and I blew coal and it was followed by a decent amount of white smoke. If it sits over night it smokes just one pretty good size white cloud if it's sits for couple hours it doesn't smoke white at start up. I don't know if the constantly fluctuating Main Injection Fuel rate is normal. 174 posts · Joined 2009. . 2005 LLY, (minty) 228,000kms and counting, 4-inch mbrp straight pipe, Superchip, afe Mar 30, 2008 · 2001-2004 GMC Sierra. 4 posts · Joined 2010. Sent from my iPhone using Tapatalk. Oil level is fine. Toyo R/T 35x12. Jan 20, 2013 · M. #15. When it goes to high idle it should start to clean up Mar 27, 2021 · Hello I am new to the page. When I bought the truck it was blowing tons of black smoke. but more than likely we all know my injectors are most likely shot. That seems like too much to me though. But it did sit for a week and it smoked white for about 10 Nov 2, 2015 · Blowing white smoke is a red flag for your diesel engine, yet we see this happen all the time to our customers. Normal. Dec 30, 2013 · Exhaust has blue smoke at idle regardless of temps. 50. This can lead to a reduction in performance and an increase in emissions. The white smoke issue is something else. The presence of blue smoke is an indication of burning oil. White smoke is either unburnt diesel fuel or coolant, depending on the smell of the exhaust. If your worried about it, take it to the dealer and have your balance rates read. Oct 7, 2008 · Duramaxdiesels. As of recent, the truck will blow out white smoke after a couple of minutes of running. One way to rule it out would be to use the DVT and control pressure. It does seem to effect power and acceleration. When stopped at a stop sign for instance, it blows cold air but the temperature gauge still reads 190-210. I know with my LB7, once I saw white smoke, it was time to replace the injectors. Feb 6, 2013 · 1533 posts · Joined 2011. Any help will be much appreciated. with 6. Jun 12, 2012 · Blue smoke from tailpipe on cold start started about one month ago. Truck went into limp mode, white smoke. P2133 APP sensor 3 high. Dealer said injector (s) were bad. I have a 2012 LML with a mini maxx and a AFE down pipe straight Nov 24, 2013 · 77 posts · Joined 2012. But then upon the first acceleration of the day it’ll blow a decently big cloud of blue / white smoke. Hope not though. The blue smoke will continue until the engine warms up and then goes away under all conditions. It usually happens right before the black smoke. I left the truck running and when I went to pull out of the station white smoke covered the two lanes beside me. Then turn off controls and watch it come back in about ten seconds. Will blow black smoke when you really give it some throttle. 2008 2500HD LTZ, EFI Live- Idaho Rob's Tunes, 4" Magnaflow Turbo Back, Raptor 150 Lift Pump, Transgo Jr, All Season Diesel EGR delete with high flow Y-bridge, Edge Insight for gauges, Like. I went from maybe 15 mph to 35 mph. Sep 12, 2010 · 344 posts · Joined 2009. Water pump was changed with injectors at 90,000. Things I’ve checked and/or done. You can pressurized intake system to check for leaks but you might be looking at an injector head gasket issue. You should be covered under the GM 7yr / 200k mile warranty though. 41 @109. last weak I blew the side of my radiator out. But there is very noticeable white smoke coming out of the PCV reroute tube I have dumped towards the bottom of truck. Coolant level is good. com leveling keys,Cognito UCA's, prototype Gibson DPF back exhaust, Banks cold air intake, Eagle alloy 079 18x9 with a zero offset & 35/12. Feb 12, 2018. Figured that an injector maybe stuck. but since we have turbos , could also be from pcv, or turbo seals also,can also be cylinder wall washing due to too rich of a mixture on cold start up . It can blow what looks like white or gray or bluish color while in regen under med/heavy acceleration. Possibly leaking. A bad injector that white smokes will not show up on the balance rates. And if you have lost the cat that exhaust may stink. I found them at a site called 15overcost. just what I have read. Not likely for an boost leak to cause whitish smoke. #14 · May 24, 2012. On the second motor I raised the CR to closer to 16. Damn the bad luck. They are also new Bosch injectors not reman garbage. 2L Diesel Engine Suspension & Steering - 2001 - 2010 Top Contributors this Month View All Aug 2, 2023 · so I bought a 2015 LML, truck is deleted but I do not have the actual programmer for it, don't even know what type of programmer was installed to bypass the delete. This actually is not white smoke but atomized diesel fuel. 2 posts · Joined 2016. Blake . My lly has been smoking at start up . A little white puff isn't an issue, it's steam from the warm air hitting the cold in the exhaust. I have an 04. the truck has brand new injectors and a new injection pump. valve rings or waxing will be blue all the time, mine does it on real cold start up/. Injectors were changed at 40,000 and 90,000 and it has 126,000 now. Dec 19, 2021 · So, I’ve got an 02 duramax that I’m at my whits (and my wallets) end with. Feb 12, 2011 · my lb7 has 187k on it and its beginning to smoke white at idle. Enough that you wouldn't of been able to see the car behind me. Blue smoke should not be ignored but is common when starting an engine in a cold weather. White/blue smoke will be normal on a cold start with any diesel. 02 2500 4x4 extend cab long box,lb7 5 speed ali,hyper tech tuner,Bilstiens, 265/75/16 BFG AT 550,000 klm,s still going strong ( used for work ) 04. And IMHO a quick small puff of white or black smoke on a 200k mile, 13-15 year old truck is really nothing to worry about. #1 · Jan 20, 2013. The engine had been properly warmed Jan 30, 2017 · 2118 posts · Joined 2011. I goosed it again, and same thing happened. That is all the code after a 10 minute run and after reset. Oil is about 1/2 quart low at about 3500 miles. Now that its cold when I start my truck and it goes into high idle it will have white and blue smoke coming out of the exhaust which I'm not sure May 1, 2014 · 3303 posts · Joined 2011. Could also check the balance rates on the injectors. 9 119k . 7. 4" turbo back custom stainless exhaust w/. #3 · Nov 4, 2010. Otherwise, my truck has done that since new, (not blue smoke, but a gray haze) and my balance rates are perfect. #9 · Jan 26, 2014. You can get white smoke in the fuel form from one, or more of the following: Apr 12, 2017 · Air in fuel . No white smoke at all when warm. Starts up no problem, no white smoke, no loss of oil pressure, no leaks. Especially, if you have rare fuel coming out the exhaust. I noticed my 2016 Duramax is blowing blue smoke on hard acceleration at times. #1 · Nov 24, 2013. 6L Duramax Z71 SLT, 4" MBRP T409SS With 4"x6"x18" Tip, DPF/CAT Delete, EFI LIVE DSP-5 Switch, Edge Feb 20, 2021 · 04 lb7, truck runs rough on first cold start of the day (it's been around -10 to +10 degrees fahrenheit here in iowa) the truck starts great, always starts right up. But white, raw smelling smoke at idle, that goes away when the truck is warmed up is a sign of low compression (bent rods) in one or more cylinders. Ya that sounds about right, My truck smokes like a bastard on startup in the cold, today was especially bad, tho its more of a blueish smoke. #9 · Feb 10, 2013. Also, you could try unpluging the injector and see if the smoke at idle stops. The oil thins out when it is cold and some could escape into the cylinder and be burnt. 38. #1 · Jul 7, 2011. #1 · Apr 25, 2012. when i applied about 3/4 throttle the truck blew enough blue smoke to "black out" the on ramp. Mar 21, 2013 · We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. White smoke your seeing is unburnt diesel fuel from the 9th injector during regen. I figured it looked blue and that it could be my valve stem seals, but I had someone else look at it and he says it’s white smoke and smells like fuel. Now this isn’t always the case, but after some trouble shooting we’re Jan 4, 2019 · Most all vehicles will roll white smoke where the humidity is high, but should clear up when warm. #9 · Apr 25, 2014. I have 37000 miles on my 16 3500HD GMC. Looking for some insight on this issue I've been having. 5 posts · Joined 2008. Black smoke is the most common type of smoke that is emitted. I was running closer to 15:1 and only 40% injectors. When this happens the truck will not allow rpms over 2000. the first thing i asked a guy was about the injectors which he said were replaced with 100 hp aftermarket ones from industrial injections. Replaced by dealer. 2002 K3500 D/A LB, CC, black W/ blacked out lighting, stock. (Mostly driving to work which is 2 hours away) Now, have the white to gray smoke at idle. 2106 posts · Joined 2011. Sep 26, 2022 · White Smoke on Cold Start. From all out performance builds running 8 second ¼ mile territory, to 2000hp sled pullers and all the way back to the average guy looking to boost his performance in his tow rig to get up those hills a Sep 21, 2015 · lml blew blue smoke out exhaust. P2128 APP sensor 2 high. I have recently ordered new injectors for my 03 duramax. P2132 APP sensor 3 low. 05' LLY CC/SB 12. i read alot about injectors May 31, 2017 · May 30, 2017. #7 · Mar 25, 2009. Sep 6, 2012 · Solved white smoke at startup. Jan 26, 2009 · I have a 03 with a 6. i bought a 2003 duramax with 285,000 miles. Any help would be appreciated. This happens mainly in mornings. 5 2500 4x4 cc,sb, LLY, 5 speed Ali ,LT, stock, sold @ 60,000 klm,s. I brought my lb7 in last year to get the injectors checked out because I was getting some white smoke at idle. the issue I'm having is that the truck blows a lot of white smoke at 1000-2000rpms then when I fully stomp on it clears up. Nerf bars. I have a 2002 Silverado 2500 4x4 w/ 270k miles. filled up twice now and still smokes fuel filter has less than 10000 miles on it. If it is really eye burning smoke then that is more than likely all that it is. #6 · Sep 21, 2010 (Edited) . No codes, balance rates are good. I have replaced: Confirmed power to last glowplug on circuit with key on. #2 · Nov 10, 2013. Dec 9, 2016 · So I have had this recurring problem for 3 years now. 6L Duramax™ Diesel Engine (VIN 1 -- RPO LB7) This bulletin is being revised to include additional service information and revised warranty information. Goes away when driving down road. And PPE only shows balance rates, go to a diffrent dealer and have them scan it. The smoke smells like exhaust, not oil or coolant. ive read about 500 forum threads on white smoke but none match the symptoms im having. Nov 8, 2014 · Connecticut. The fuel went into the engine but did not ignite. Nov 14, 2013 · Lbajo1 Discussion starter. See full list on learndiesels. Jan 12, 2012 · Mine smokes too, if the sun hits it just right you can see the smoke also when at idle and there is a car behind me at night i can see it blowing alittle bit, but as the guy said above, i have yet to see an LMM with DPF not smoke. Nov 23, 2013 · Likely the cold start had it running a bit rich. #1 · Feb 12, 2020. 2009 GMC Sierra 2500HD SLE CC/SB 4x4 LMM. I looked in the mirror and it was blowing white smoke real bad. The potential causes include fuel injectors sticking, poor turbo performance, EGR valve or EGR cooler issues, dirty air cleaners causing heavy restriction. Just cold fuel smoke but ALWAYS clears up after a couple seconds. Immedialty after installing, the truck will intermittently loose power and emit an enoumous amount of black smoke then clear up. 43. Smokes white while at idle as well. So I tried not plugging it in on the cold nights. 79@154mph) Like. This spring my injectors went bad, tons of white smoke both at idle and under throttle. Apr 25, 2023 · Billowing white smoke after long idle. Miltp920 Discussion starter. so i recently noticed my lbz seems to smoke at idle. Francoditrolio Discussion starter. In many cases, white smoke emanating from the tailpipe (often at idle once the engine reached operating temperature) typically means a worn out injector. Jan 8, 2006 · White smoke at idle is unburned fuel, black smoke under heavy load is partially burned excess fuel that the engine cannot utilize. May 27, 2018 · 22 posts · Joined 2012. But idles rough and blows some blueish white smoke for a bit until it warms up. tl wv hk ny ij jo bn xq lt cr